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    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="css/style3.css">
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<body>
    <div class="div1">
        <div class="box1">王</div>
        <div class="box2">思</div>
        <div class="box3">飞</div>
        <div class="box4">OK !</div>
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